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Enhancing pitting corrosion inhibition of AISI 304 stainless steel using a green frankincense-modified ferric chloride solution Cover

Enhancing pitting corrosion inhibition of AISI 304 stainless steel using a green frankincense-modified ferric chloride solution

Materials Science-Poland
Volume 41 (2023): Issue 3 (September 2023)
By: ,   and    
Open Access
|Jan 2024
Figures & tables

Figures & Tables

Fig. 1.

a) Frankincense olibanum resin, b) the structure of β-boswellic acid, one of the main active components of frankincense [35], and c) incensole acetate [36]

Table 1.

Chemical composition of AISI 304 stainless steel

ElementCCrNiMnPSiSFe
Wt. %0.0718.258.21.80.0440.770.032balance
Fig. 2.

EN experimental setup

Fig. 3.

Current and potential EN noise values recorded for an inhibitor-free solution

Fig. 4.

Current and potential electrochemical noise values recorded for a-b) 2.5 wt.%, c-d) 5wt. %, e-f) 7.5 wt.%, and g-h) 10 wt.% of frankincense addition, respectively

Fig. 5.

The effect of frankincense addition on mean potential noise, mean current noise, and noise resistance (Rn)

Table 2.

The values of the Imean and Vmean were calculated from the data recorded in Figures 3 and 4 for AISI 304 SS at different percentages of frankincense addition to ferric chloride solution. The noise resistance (Rn) was calculated from σV and σI according to Equation (1)

% of frankincense additionImean (A.cm−2)Vmean (V)σI (A.cm−2)σV (V)Rn (Ω.cm2)
06.05×10−02–3.82×10−039.70×10−035.82×10−056.00×10−03
2.54.75×10−02−4.06×10−036.79×10−035.69×10−058.37×10−03
53.42×10−02−4.19×10−032.64×10−034.72×10−051.79×10−02
7.51.58×10−02−4.10×10−033.99×10−033.12×10−057.82×10−03
107.90×10−041.34×10−028.65×10−041.80×10−032.08
Fig. 6.

PSD spectral noise resistance of AISI 304 stainless steel samples for the (a) inhibitor-free, (b) 2.5 wt.% inhibitor, (c) 5 wt.% inhibitor, (d) 7.5 wt.% inhibitor, and (e) 10 wt.% inhibitor

Fig. 7.

Optical microscope images for the a) as-received AISI 304 SS and for the AISI 304 SS samples tested in 0.5 M ferric fluoride with b) frankincense-free, c) 2.5 wt.%, d) 5 wt.%, e) 7.5 wt.%, and f) 10 wt.% of frankincense addition

Fig. 8.

The effect of frankincense addition on the number of pits mm−2 and the size of pits

Fig. 9.

Potentiodynamic polarization curves for AISI 304 SS in a) 0.5 M FeCl3 solution and in the solution with different percentages of frankincense addition and b) the change in corrosion current, corrosion potential, and inhibition efficiency with frankincense addition

Table 3.

Polarization parameters of 304 SS in 0.5 M FeCl3 with various percentages of frankincense additions

% of frankincense additionIcorr. (A.cm−2)Ecorr. (V)EI (%)
07.17×10−04−0.3700
2.56.12×10−04−0.32414.62
55.20×10−04−0.32115.03
7.54.30×10−04−0.28017.31
104.01×10−04−0.2686.70

1 Icorr.: corrosion current, Ecorr.: corrosion potential.

DOI: https://doi.org/10.2478/msp-2023-0037 | Journal eISSN: 2083-134X (formerly 2083-124X) | Journal ISSN: 2083-1331
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Language: English
Page range: 85 - 98
Submitted on: Sep 14, 2023
Accepted on: Dec 13, 2023
Published on: Jan 30, 2024
Published by: Wroclaw University of Science and Technology
In partnership with: Paradigm Publishing Services
Keywords:
304 stainless steel,
electrochemical noise (EN),
frankincense,
pitting corrosion,
green inhibitor,
polarization
Related subjects:
Materials sciences,
Materials sciences, other,
Nanomaterials,
Functional and smart materials,
Materials characterization and properties

© 2024 Sami Masadeh, Shadi Al khateeb, Almontaser Bellah Ajlouni, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Volume 41 (2023): Issue 3 (September 2023)
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